linux-kernel - Re: [syzbot] [netfilter?] WARNING: ODEBUG bug in ip_set

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Date: Wed, 14 Feb 2024 08:55:51 +0800
From: Hillf Danton <hdanton@...a.com>
To: syzbot <syzbot+ebbab3e04c88fa141e6b@...kaller.appspotmail.com>
Cc: linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [netfilter?] WARNING: ODEBUG bug in ip_set_free

On Tue, 13 Feb 2024 10:22:24 -0800
> HEAD commit:    f735966ee23c Merge branches 'for-next/reorg-va-space' and ..
> git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=161a6ba2180000

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git  master

--- x/net/netfilter/ipset/ip_set_bitmap_gen.h
+++ y/net/netfilter/ipset/ip_set_bitmap_gen.h
@@ -60,6 +60,7 @@ mtype_destroy(struct ip_set *set)
 {
 	struct mtype *map = set->data;
 
+	del_timer_sync(&map->gc);
 	if (set->dsize && set->extensions & IPSET_EXT_DESTROY)
 		mtype_ext_cleanup(set);
 	ip_set_free(map->members);
--